<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <button id="btn">加载index.js</button>

    <script>
        const oBtn = document.getElementById('btn')

        oBtn.onclick= async function(){
            await import("./index.js");
            console.log("okk");
        }
    </script>
</body>

</html>